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Siemens 5SY6306-6 — 3-Pole MCB (DIN Rail)

Siemens SENTRON 5SY6306-6 MCB, 3P B-Curve, 6 kA IEC, 30 kA I

MPN5SY6306-6

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Siemens SENTRON 5SY6306-6, 3-pole miniature circuit breaker, B-curve, 6 kA (EN 60898) / 30 kA (IEC 60947-2), 400 V AC, 3 MW units, IP20.

$25.40Ref. price · indicative, final on quote

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Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

5SY6306-6 — Identification
Parameter	Value
Brand name	SENTRON
Number of poles	3
Pole configuration	3P
Suitability for operation	Mechanical engineering / industry

5SY6306-6 — Protection
Parameter	Value
Tripping characteristic (curve)	B
Breaking capacity per EN 60898	6 kA
Breaking capacity per IEC 60947-2	30 kA
Overvoltage category	III
IP protection class	IP20, with connected conductors
Energy limitation class	3
Pollution degree	3

5SY6306-6 — Electrical
Parameter	Value
Rated voltage (AC, multi-phase)	440 V
Voltage type (AC/DC)	AC
Supply frequency range	50/60 Hz
Power loss per pole at rated current (AC, hot)	2.1 W
Mechanical service life (operating cycles, typ.)	10 000
Neutral conductor switching	No
Rated voltage (AC, single-phase)	440 V

5SY6306-6 — Mechanical
Parameter	Value
Modular width units	3
Mounting position	any
Width	54 mm
Height	90 mm
Depth	76 mm
Installation depth	70 mm
Terminal tightening torque, max.	75 °C
Terminal tightening torque, min.	-40 °C
Combined terminal, top	Yes
Combined terminal, bottom	Yes
Fastening method	Quick assembly system
Sealable	Yes
Accepts supplementary devices	Yes

5SY6306-6 — Environmental
Parameter	Value
Halogen-free	Yes
Silicone-free	Yes
Influence of surrounding temperature	max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C
Vibration resistance (IEC 60068-2-6)	±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz

Product details

It protects branch circuits against overload and short-circuit in industrial control panels and mechanical-engineering installations. Rated breaking capacity is 6 kA per IEC/EN 60898-1 and 30 kA per IEC 60947-2 at 400 V AC. For DC circuits, it's rated 15 kA at 60 V (max 72 V) per IEC 60947-2. Under UL 1077, the supplementary-protector rating is 5 kA. Halogen-free and silicon-free construction, sealable for lockout/tagout.

Width is 54 mm (3 modular width units on a DIN rail). IP20 with conductors connected, so it's for enclosed panels, not wet areas.

Frequently asked questions

What compliance documentation does 5SY6306-6 carry?

It is certified to IEC/EN 60898-1, IEC/EN 60947-2, and UL 1077. Halogen-free and silicon-free construction. Pollution degree 3, overvoltage category III.